Uses:

Erectile Dysfunction (ED): Treats the inability to achieve or maintain an erection sufficient for sexual intercourse.

Benign Prostatic Hyperplasia (BPH): Helps relieve symptoms of an enlarged prostate such as difficulty in beginning the flow of urine, weak stream, and the need to urinate frequently or urgently.

Pulmonary Arterial Hypertension (PAH): Used to improve the ability to exercise by relaxing the blood vessels in the lungs to allow blood to flow more easily.